A176788 - cp's OEIS frontend

A176788 a(n) = (0!! + 1!! + 2!! + 3!! + ... + (n-1)!!) mod n.

n	a(n)
1	0
2	0
3	1
4	3
5	0
6	0
7	1
8	7
9	0
10	2
11	6
12	3
13	12
14	10
15	12
16	3
17	13
18	6
19	11
20	7
21	3
22	8
23	14
24	15
25	12
26	22
27	15
28	3
29	19
30	12
31	16
32	11
33	30
34	14
35	17
36	15
37	17
38	34
39	9
40	7
41	26
42	24
43	36
44	19
45	42
46	8
47	2
48	3
49	24
50	12
51	48
52	35
53	2
54	42
55	52
56	31
57	15
58	22
59	51
60	27
61	32
62	56
63	24
64	27
65	22
66	30
67	6
68	31
69	54
70	52
71	12
72	15
73	7
74	56
75	12
76	15
77	52
78	48

[0, 0, 1, 3, 0, 0, 1, 7, 0, 2, 6, 3, 12, 10, 12, 3, 13, 6, 11, 7, 3, 8, 14, 15, 12, 22, 15, 3, 19, 12, 16, 11, 30, 14, 17, 15, 17, 34, 9, 7, 26, 24, 36, 19, 42, 8, 2, 3, 24, 12, 48, 35, 2, 42, 52, 31, 15, 22, 51, 27, 32, 56, 24, 27, 22, 30, 6, 31, 54, 52, 12, 15, 7, 56, 12, 15, 52, 48]

cp's OEIS Frontend

A176788 a(n) = (0!! + 1!! + 2!! + 3!! + ... + (n-1)!!) mod n.

Table of values

List of values

n	a(n)
1	0
2	0
3	1
4	3
5	0
6	0
7	1
8	7
9	0
10	2
11	6
12	3
13	12
14	10
15	12
16	3
17	13
18	6
19	11
20	7
21	3
22	8
23	14
24	15
25	12
26	22
27	15
28	3
29	19
30	12
31	16
32	11
33	30
34	14
35	17
36	15
37	17
38	34
39	9
40	7
41	26
42	24
43	36
44	19
45	42
46	8
47	2
48	3
49	24
50	12
51	48
52	35
53	2
54	42
55	52
56	31
57	15
58	22
59	51
60	27
61	32
62	56
63	24
64	27
65	22
66	30
67	6
68	31
69	54
70	52
71	12
72	15
73	7
74	56
75	12
76	15
77	52
78	48

n	a(n)
1	0
2	0
3	1
4	3
5	0
6	0
7	1
8	7
9	0
10	2
11	6
12	3
13	12
14	10
15	12
16	3
17	13
18	6
19	11
20	7
21	3
22	8
23	14
24	15
25	12
26	22
27	15
28	3
29	19
30	12
31	16
32	11
33	30
34	14
35	17
36	15
37	17
38	34
39	9
40	7
41	26
42	24
43	36
44	19
45	42
46	8
47	2
48	3
49	24
50	12
51	48
52	35
53	2
54	42
55	52
56	31
57	15
58	22
59	51
60	27
61	32
62	56
63	24
64	27
65	22
66	30
67	6
68	31
69	54
70	52
71	12
72	15
73	7
74	56
75	12
76	15
77	52
78	48

n	a(n)
1	0
2	0
3	1
4	3
5	0
6	0
7	1
8	7
9	0
10	2
11	6
12	3
13	12
14	10
15	12
16	3
17	13
18	6
19	11
20	7
21	3
22	8
23	14
24	15
25	12
26	22
27	15
28	3
29	19
30	12
31	16
32	11
33	30
34	14
35	17
36	15
37	17
38	34
39	9
40	7
41	26
42	24
43	36
44	19
45	42
46	8
47	2
48	3
49	24
50	12
51	48
52	35
53	2
54	42
55	52
56	31
57	15
58	22
59	51
60	27
61	32
62	56
63	24
64	27
65	22
66	30
67	6
68	31
69	54
70	52
71	12
72	15
73	7
74	56
75	12
76	15
77	52
78	48